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patch 9.0.0099: scrollback can be wrong after redrawing the command line

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Problem:    Scrollback can be wrong after redrawing the command line.
Solution:   Clear unfinished scrollback when redrawing. (closes #10807)
This commit is contained in:
zeertzjq
2022-07-28 12:34:09 +01:00
committed by Bram Moolenaar
parent 5748b7f2c8
commit 46af7bc08d
5 changed files with 56 additions and 7 deletions
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46
src/message.c
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@@ -2535,6 +2535,7 @@ store_sb_text(
|| do_clear_sb_text == SB_CLEAR_CMDLINE_DONE)
{
clear_sb_text(do_clear_sb_text == SB_CLEAR_ALL);
msg_sb_eol(); // prevent messages from overlapping
do_clear_sb_text = SB_CLEAR_NONE;
}
@@ -2579,23 +2580,58 @@ may_clear_sb_text(void)
}
/*
* Starting to edit the command line, do not clear messages now.
* Starting to edit the command line: do not clear messages now.
*/
void
sb_text_start_cmdline(void)
{
do_clear_sb_text = SB_CLEAR_CMDLINE_BUSY;
msg_sb_eol();
if (do_clear_sb_text == SB_CLEAR_CMDLINE_BUSY)
// Invoking command line recursively: the previous-level command line
// doesn't need to be remembered as it will be redrawn when returning
// to that level.
sb_text_restart_cmdline();
else
{
msg_sb_eol();
do_clear_sb_text = SB_CLEAR_CMDLINE_BUSY;
}
}
/*
* Ending to edit the command line. Clear old lines but the last one later.
* Redrawing the command line: clear the last unfinished line.
*/
void
sb_text_restart_cmdline(void)
{
msgchunk_T *tofree;
// Needed when returning from nested command line.
do_clear_sb_text = SB_CLEAR_CMDLINE_BUSY;
if (last_msgchunk == NULL || last_msgchunk->sb_eol)
// No unfinished line: don't clear anything.
return;
tofree = msg_sb_start(last_msgchunk);
last_msgchunk = tofree->sb_prev;
if (last_msgchunk != NULL)
last_msgchunk->sb_next = NULL;
while (tofree != NULL)
{
msgchunk_T *tofree_next = tofree->sb_next;
vim_free(tofree);
tofree = tofree_next;
}
}
/*
* Ending to edit the command line: clear old lines but the last one later.
*/
void
sb_text_end_cmdline(void)
{
do_clear_sb_text = SB_CLEAR_CMDLINE_DONE;
msg_sb_eol();
}
/*